Mechanically-adjustable resilient tire.



/ v B. BAEL.

MEGHANIGALLY ADJUSTABLE RESILIENT TIRE.

APPLIGATION FILED JUNE 1, 190s.

Patented Feb. l, 1911.

narran strat BENJAMIN DA-IL, OF MINNEAPOLIS, MINNESOTA.

MECHANCLLY-ADJUSTABLE. RESILIENT TIRE,

essere.

Specification of Letters Patent.

Application filed .Tune 1, 1908. Serial No. 435,961.

`hereby declare the following to be a full,

clear, and exactdescription of the invention, such as will enable others skilled in the artto which it appertains to make and use the My invention relates to resilient tires and has for its object to provide improved means whereby, without the use of-a pneumatic tuhe, a tire of rubber or other elasticmaterial may be put under varying tension so it will properly sustain its load and still have the desired resilience.I i

To the above ends the invent-ion `consists of the novel devices and combinations of devices hereinafter described'and defined in the claim.

In the accompanying drawings which illustrate the invention, like characters indicate like parts throughout the several views. n

Referring to the drawings, Figure l is a side elevation, with some parts broken away, showing a wheel, such as an automobile wheel, equipped with a tire designed in accordance with my invention, and Fig. 2 is a transverse section taken on the line m2 ,fvg of Fig. l.

The immoral l indicates a wheel having' the usual wooden telly to which is applied a channel shaped metal rim 2.

The tire has an outer sheath 3 which is much like the outer sheath of a double-tubed pneumatic tire, and is provided Von its inturned edges with solid ribs 4 that are adapted to interlock with the irl-turned flanges o the metal wheel rini 2 when the said sheath put under expanding pressure. The sheath 3 is provided with an internal filler 5 of soft spougelike rubber or similar elastic material, which normally nearly or quite fills the said she-1b. The mechanical expander comprises a multiplicity of metallic blades -or winesl (i the abuttine edees of which are ,TJ l U 2D hinged together at 7, andthe free edges of which work slidably upon a concave channel-shaped sheath' clamping plate 8. This sheath clamping plate 8 is preferably made in a single piece, but it may be made up of a multiplicity of sections. When applied, as shown in the drawings, it holds t-he edge ribs 4 of the sheath 3 interlocked with the iianges of the metal rim 2. The expanding blades 6 are arranged lin overlapping sections which make up a complete or endless expander. For each pair of hinged expand.

ing blades 6 there is an expanding screw 9, which, as shown, works freely through ooincident perforations in the clamping plate 8, in the metal rim 2, and in the wooden felly of the wheel l, all as bestshown in Fig. 2. The* threaded innenends of the screws 9 work through nuts 10 fitted in seats l1 of the clamping plate 8 and held against rotation thereby so as to afford bases of reaction for said expanding screws. At their extreme inner ends the sai'd screws 9 are preferably provided with heads l2 that directly engage the intermediate portions of the hinge joints 7 of the cooperating pairs of expanding blades 6. rlhe inwardly projecting and exposed ends of the adjusting screws 9 are provided with angular shanks 13 to which keys or operating hand-pieces lll are adapted to be detaehably applied for the purpose of ,turning the saidA screw. As shown, the screws i) are provided ,with tl reads 15 just .inward of their Shanks 13, tojvhioh protecting caps l16 are applied, as shhwn in several instances in Fig. l.

As is evident, when the expanding' blades f6 are moved into or toward the positions -indicated by'dotted lines in Fig. 2, the elastic "filler 5 will, of course, be pressed outward aud'put under increased pressure, a'hd this,

of course, results in the application. of au expanding pressure against the sheath 3.

lu this way, as is evident, a complete tire may be sot under varying tension, that is, may be made more or less'solid, according to the extent of the load which is to be carried by the wheel. lt also of course follows that. by these adjustments the resilience of the tire may be. varied.

rammen ren., it, fait.

'te force the seme against seid falle? and eeesve thereby vary the pressure O' iblue letteren the said sheath.

In testimony Whe'eof l affix my signature in presence of two Witnesses.

BENJAMHI BAEL.

l Witnesses: I HARRY l). LILGOBE, l MAME Hom. 

